I definitely think you've improved! Now. I am not going to dig up any of my old, old art, because I think I've thrown most of my sketchbooks from middle school and at least the first half of high school in the bin. But we can go through my deviantart.
4/11/03 - The first thing I ever posted in my dA! I drew it by hand and colored it in MS Paint. X3
2/14/04 - Obviously this was photoreferenced. I did a couple of drawings using Chelsea's pictures.
2/8/05 - Holiday was really cute. I wish I had kept drawing her. She was my tiny muse.
2/17/06 - I started coloring things in photoshop!
1/29/07 - Recentish pencil doodle.
And obviously the art in my sig is brand new, but not super awesome. That was a fun trip down memory lane!